The Reporting API
Reporting API brings a common infrastructure for the browser to send reports for various issues: CSP violations, deprecations, browser interventions, network errors, and feature policy violations.
ReportingObserver: know your code health
ReportingObserver gives developers insight into what their code is doing in the wild. ReportingObserver surfaces information on issues like deprecations and interventions, messages that were previously only available in the DevTools console.